PS2.B: Types of Interactions

Paul Andersen explains how objects interact when touching and at a distance. Electromagnetic forces are very important when objects are touching and fields explain both electromagnetic and gravitational forces. The strong and weak nuclear forces can result in radioactive decay. A brief description of Newton's Law of Universal Gravitation and Coulomb's Law are includes.

Paul Andersen explains how objects interact when touching and at a distance.  Electromagnetic forces are very important when objects are touching and fields explain both electromagnetic and gravitational forces.  The strong and weak nuclear forces can result in radioactive decay.  A brief description of Newton's Law of Universal Gravitation and Coulomb's Law are includes.  A teaching progression from grades K-12 is also included.

SEP1: Asking Questions and Defining Problems

Science and Engineering Practice 1: Asking Questions and Defining Problems Paul Andersen explains how asking questions is the first step in both science and engineering. Questions allow scientists to direct inquiry with a goal of understanding the phenomena in the Universe. Questions allow engineers to define problems that require solutions.

Paul Andersen explains how asking questions is the first step in both science and engineering.  Questions allow scientists to direct inquiry with a goal of understanding the phenomena in the Universe.  Questions allow engineers to define problems that require solutions.